Finding the Fourth Proportional to 202.87, 279.95 and 115.53
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Solution
The fourth proportional to 202.87, 279.95 and 115.53 is: 159.43
Step by Step Solution
- Step 1: Write the proportion equation
202.87 : 279.95 = 115.53 : x - Step 2: Convert to fraction form
202.87/279.95 = 115.53/x - Step 3: Cross multiply
202.87x = 279.95 × 115.53 - Step 4: Simplify right side
202.87x = 32,342.62 - Step 5: Solve for x
x = 32,342.62/202.87 - Step 6: Final answer
x = 159.43
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.